If you have pets or kids, use tamper-resistant bait stations. Winter means more indoor time, more risk of accidental exposure. Safety first.
Colder temps can slow metabolism and reduce bait uptake. In very cold spots (unheated garages) you might need baits with stronger scent to tempt them.
Best success happens when you combine baiting with exclusion, sanitation, and monitoring. Winter gives you a window, rats are inside and more predictable, make the most of it.